INVESTIGADORES
RIVAROLA Roberto Daniel
artículos
Título:
Energy and angular distribution of electrons ejected from water by the impact of fast O8+ ion beams
Autor/es:
S. BHATTACHARJEE; C. BAGDIA; M. R. CHOWDHURY; J. M. MONTI; R. D. RIVAROLA; L. C. TRIBEDI
Revista:
EUROPEAN PHYSICAL JOURNAL D
Editorial:
SPRINGER
Referencias:
Lugar: Berlin; Año: 2018 vol. 7215 p. 1 - 9
ISSN:
1434-6060
Resumen:
Double dierential cross sections (DDCS) of electrons emitted from vapor water molecules (in vapor phase) by 2.0 MeV/u and 3.75 MeV/u bare oxygen ion impact have been measured by continuum electron spectroscopy technique. The ejected electrons were detected by an electrostatic hemispherical deection analyzer over an energy range of 1{600 eV and emission angles from 20 to 160. The DDCS data has been compared with the continuum-distorted-wave-eikonal-initial state (CDW-EIS) approximation anda reasonable agreement was found with both version of the models i.e. post and prior version. By numerical integration of the DDCS data, the single dierential cross section (SDCS) and total ionization cross section (TCS) were obtained. The obtained TCS results were compared with other available TCS results for water target within the same energy range. The total ionization cross sections values are seen to saturate as the projectile charge state (qp) increases, which is in contrast to the rst-Born predicted q2 p dependence. Thisis also in contrast to the prediction of the CDW-EIS models.